Valve



Feb. 3, 1942. $HAAF 2,272,132

VALVE Filed July 1, 1940 3 Sheets-Sheet 2 Gcazje Selma/f INVENTOR ATTONEY Feb. 3, 1942. SCHMF 2,272,132

VALVE Filed July 1, 1940 3 sheets sheet 3 FIG. 9. FIG. 10.

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fiaagge Sclzazazf INVENTOR Patented Feb. 3, 1942 VALVE 1. "L147.

George Schaaf, Buflalo, N. Y. I r

Application Jilly 1, 1940, Serial No.'3l3,381

Claims.

This invention relates in general to valves and to a type of valve forcontrolling the passage to a container for carbon dioxide or othermedium which is held in said container under considerable pressure, andespecially to the class known as packless valves.

Where carbon dioxide is employed for fire extinguishing purposes thefluid is maintained under high pressure in a container. and at ordinarytemperatures the carbon dioxide is in liquid form. On account of thehigh pressure der which the carbon dioxide is maintained a cial forms ofvalve construction have been devised for controlling the discharge fromthe container. To prevent leakage a preferred type is the so-calledpackiess valve in which a diaphragm is employed to close oi! the valvefrom its operating mechanism. In order to. have the contents of thecontainer instantly available it is desirable to have a quick openingvalve and one which will be fully opened by the valve spring and fluidpressure when once released. Also that means be provided to close thevalve against the fluid pressure when'once opened, as in the case of alarge container when partly discharged, and to prevent such closinguntil the entire tank contents is discharged, as in the case of a smallOne of the objects of this invention is to provide a valve of thepackless type which can be fully opened instantly. either manually orautomatically, for the release of the contents of the container to whichit is attached.

Another object is to provide a valve of the above general type which maybe closed after a portion of the contents of the container have beendischarged.

Another object is to provide means to lock the valve in a closedposition.

Another object is to provide means to prevent manual operation of thevalve during dlsdharge.

with the foregoing and other obiects in view which will appear as thedescription proceeds, the invention consists in certain features ofnovelty in the construction, combination and arrangement of parts bywhich the said objects are attained, the invention being moreparticularly pointed out in the claims. r

In the accompanying drawings: 1

Figure 1 is a front elevation, mostly in section on line i-l of Figure2, of a valve structure embodying my invention and showing the valve ina closed position.

Fig. 2 is a side elevation of my device showing the outside valveoperating mechanism in a closed position asinFig.l.- Fig. 3 is asectional view: of a portion of the device as in Fig. 1 but with thevalve in an open position. 1 Fig. 4 is a front elevation of my devicewith a modified operating handle in a closed position. Fig. 5 is a sideelevation as in Fig. 4* with the handle in full for the closed positionand dotted to show the open position. i

Figs. 6 and 7 are front and side elevation of the upper portions of avalve structure embodying another modification for the .valvecontrol.

Fig. 8 is asection on line H of Fig.- 6. Fig. 9 is a front elevation,mostly in section or line 9-! of Fig. 13, of a valve structure as in Figl but with a modified valve control from that 0.

Figs. 6, 7 and 8, and showing the valve in a closed position.

Fig. 10 is a view as in Fig. 9 but'with the valve in an open positionand showing a cover for the operating stem.

Fig. 11 is an outside front elevation-of the upper portion as in Fig. 9.l,

Fig. 12 is an outside front elevation of theupper portion as in Fig. 10but withoutcover.

Fig. 13 is a side elevation of F18."11.

Referring to Figs. 1. 2 and-,3, the lower-end of body i i -threaded at 2for connection to a cdntainer and has an axial inlet passage 3 extendingup into a valve chamber all laterally extending boss 5 having apassagelcommunieating with passage I, provides means for accommodating asafety disk I whichis held in Place by a threaded cap I. a v. a

Any abnormal pressure developed in. the tank will rupture the disk I andallow the fluidto escape through passages O in the cap! in the usualmanner. r

Communicating with thevalve'chamber .l is a discharge passage III inanother laterally extending boss ii which canbe threaded as shown, orotherwise arranged for connecting to the other parts of a ilre extinuishing apparatus.

The opening and closing of passage liscontrolled by a valve it which has.as'uitable sealing insert it on its lower end to cooperate with theannular valve seat It. Insert i3 is fastened to valve It by means oftheqthreaded thimble i5. Valve l2 has a stem It on the upper end ofwhich is fastened a nut H by meansofithreads. The

'upper end of chamber 4 is closed by a threaded plug it with a steppedcentral bores- The lower and smaller part of said bore forms a guide forthe valve stem it while the upper and larger part of said bore forms aguide (or said nut i1 and a pocket below said nut for a compressionvalve spring I! around the valve stem it. Acting against the lowershoulder oi nut I! the sin-ins it operates to raise valve II from itsseat II as will later appear.

A bonnet II is threaded at II to cover and form a connection with theupper end body I and to inclose and conflne a suitable metal diaphragmfl the rim oi which seals the Joint betweensaidbonnet and body and. thecenter 01' which rests on the-top of nut il. Centrally in line with nutI1 and contacting with the top center of diaphragm i1 is head 24 oi thescrew ll, said sore .a being carried in a crosshead II which has dingcontact within the cylindrical chamber 18 o! the bonnet :0. Screw 23 'isthreaded at 21 through the crosshead II and has a cylindrical portion IIwhich is adap d to slide in. and be guided by, the top wall of bonnetll. 7

Above the cylindrical portion 28 oi screw 28 is [a thread ll toengagethe nut II for locking the screw llirom turning when the crosshead I! isheld at the lower end oi its travel by the toggle joints to bedescribed. and the valve i! is closed on its seat II. II is a hand wheelfastened to screw" by a nut 32 for operating said screw.

fastened into opposite sidu o! the crosshead II are two pins 83, 83which are adapted to extend through and slide in vertical slots ll. 34

in thebonnet 20. 'II is the handle of a Y-shaped lever twoarms SI. II.Each arm 31 is pivoted'at its end .to a pin II and intermediate oiitslength is pivoted to a pin ll on one end of a. opposite end oi um: as ispivoted to the body l by the pivot ll, and said link I! and arm IHormatosgle joint to hold crosshead 2 at the bottom of its travel as shownin Fig. 1. when said croahead 2! is-at the bottom of its travel as inFig. lthe handle as or lever st rests liainst the body I as in Fig. 2and is-held there s dead in the usual manner. The breakp "sealoccurstvhen' the wire isbroken crneatcdsumc enu to inelt n.

top I! of chamber 2! forms a stop for the at unsound crosshead lest thetop or itstravel as in m: a and handle an then in arr showninFis. 2.

'6! the valve is as iollows: A

container or cylinder (not shown) is loaded with CO: and the valve bodyI screwed into laid convtailie'i'. I ll cloeedagainst body I as in l 2which bllnlil crossliead H to thetineai-aisesthepressureinsaidcontainertoaar' 100 or 800 pounds persquare inch. Under con- Piss ditions which -abnormally raise thispressure to said Figs.

an unsafe point the safety disk I will be ruptured to allow the fluid inthe container to escape through passages 8, 6 and 9. To open the valveII the lever It is pulled away from body I to break the seal it and assoon as the locking etiect oi the toggle joint is released by the line Hcrossing center 42 the valve spring i8, assisted by the containerpressure, iorces valve i! to a full open position as in Fig. 3 and lever36 then assumes dotted position iii as in Fig. 2. Passages! and ID arethus fully opened immediately (Fig. 3) allowing the fluid to flow freelyfrom the container.

In case it is desired to stop the fluid flow and preserve an unusedportion in the container the hand wheel II is operated to thread screwll through c'rosshead 25 while said crosshead is in its upper positionas in Fig. 3, thus flexing diaphragm 22 and closing valve if! on seat Itagainst the tank and valve spring pressures to the position shown inFig. 1.

Theinternal parts or the valve structure showninFlgs.4and6arethesameasinFigs.l, 2and 8 but the lever 38 is controlledin a diiierent manner from that in Figs. 1 and 2, i. e., the lever pin aon each lever arm I! is providedwith a roller II which is adapted toiollow the contour ll of lug it during the movement of the lever 30 todotted position 38'. The lug 4! on bonnet II has a lower surface it {orholding lever II in a closed position by means of roller 41 and lockingcrosshead ii in its lower position (Fig. 1).

A spring ll surrounding pin II and fastened intozbody I is held in acompressed position by lever II in its closed position and locked by theseal ll. The spring liv provides an automatic means ior'operating thelever 38 by iorcins said lever away irom its locked position againstbody I when a ilre breaksthe seal 45 by raising the temperature to itsmelting point. The valve i2 is then opened by its spring ID as beforeexplained in reference to Figs. -1', 2 and 8.

A modified method of locking and releasing the cr'osshead 25 of Fig. lis shown in Figs. 6, '1 and 8 and consists of a sleeve I! mounted onbonnet II and having a limitedv rotating movement thereon. Sleeve 52 isguided and limited in its rotating movement by two oppositely disposedpins .68, SI threaded into bonnet 2. and extending through horizontalslots It, ll insaid sleeves. On the quarters between screws ll, II aretwo crosshead pins 33, 83 which extend through the vertical slots 84. I4in bonnet ll and the compound slots 8 in sleeve 8!. The compound slots 6insleeve I! have two component parts, a horisontal part ii ior lockingthe crosshead, II in its lowest position and a diagonal part I! in whichsaid pins ll, travel when sleeve-H is partly rotated by means or itshandle; ll.

In the position shown in Figs. 8,1 and it the crosshead II is locked inits iowestposition as in 1 by the pins as, u in no'rizontaisiotsn.

it. Rotating sleeve 5! in the direci lbnor. arrow "by means oi handle inunlocks marm- 1 3,. and allows themto rise in diagonal notices: insleeve It and in vertical slots at. u in bonnet II when the crosshead Itmoves i'rom its lower position as mm. 1 to itsunwposition as; in Fig. 3under action of valve spring II in opening valve II.

The main parts oi the valve structure shown in to .13 l'e similar tothose shownin the above description applies to to 13. The latter howeverhas some but with an operating sleeve as in.

- er is so small, and it can only be efiective when starting full, thecontainer should be entirely discharged, necessitating refilling, whenonce the valve is opened tor use.

In Figs. 9 to 13, the sleeve I2 is mounted on bonnet 20 to be guidedbetween a shoulder II and a bonnet nut BI and is adapted to bepartiallly rotated by trigger ll acting on a pin it which is fastened tosaid sleeve. Trigger ii is pivoted to bonnet II by a pin OI and held inits operative position against a stop II by a spring llasinFig.l1.llgatllandlSoHMthe position oi sleeve 5! when the 20 is in its lowestposition to close valve 82 as in'l 'lg. landlockedlnthispositionbythserossheadpins ll. bearing against thehorizontal slotsllas in Fig. 13. When trigger it is moved by the finger"from its position in Fig. 11 to the dottedposition,

ii in Fig. 12, the sleeve pin II moves to position I (Fig. 12) and in sodoing moves sleeve 62 in the direction of arrow ll (Fig. 13) to unlockpins II from the horizontal slots ll and allow said pins II to rise indiagonal slots ll oi sleeve l2 and in the vertical slots ll oi bonnet20. The crosshead 26 then moves from its lower position in Fig. 0 to itsupper position in Fig. under action oi valve spring il in opening valveII. Releasing trigger li' it returns to its normal stop position Ii inFig. 12.

Crossheadscrewllinl'igailandlllisprovided with a socket opening I for asocket wrench in place or a hand wheel and the endoiscrewfliscoveredbyacapflandaseal to prevent tampering with and closingvalve II Irom its position in Fig. 10. by manipulating screw II, beiorethe container contents is completely discharged which takes only amatter' oi seconds. The screw It is locked from turning by nut II whenthe valve is seated to prevent leakage or turning except as intended. Itwill be understood-that any elements can be used without reference tosizes mentioned.

InFigs.8,7,8, i2and l3oneendofpinll is fastened into bonnet ll and has asuitable shape as shown for holding coil spring ll. One end of spring IIis fixed to sleeve 52 and held in a compressed position on pin 43 byseal II when the valve i2 is closed. Seal II is broken to release valvei2 and this can be done manually. or when suitably mounted for fireprotection, the spring and seal furnish automatic means for releasingsaid valve when a fire breaks the seal as before explained.

I am aware or the valves of Forbes, No. 1,890,- 505, Dec. 13, 1932, forreplacing a diaphragm: of Minor, Re. 19,087, Feb. 20, 1834, forresiliently looking a valve; and of lhillips, No. 1,996,489, forreleasing contents of pressure containers: and the present invention isto provide improved and practical means for a quick opening valve.

Having thus described my invention, I claim:

1. In a device of the character described. comprising a valve bodyhaving a discharge passage. a valve seat within a valve chamber. a valvein said chamber for said valve seat and having a stem, a spring to raisesaid valve from its seat, a diaphragm in contact with said valve stem. abonnet sealing said diaphragm in said body and having a chamber. areciprocating crosshead guided in said bonnet chambenffarl operatingstem movable in line with said valve stem to close said valve on itsseat and located on the opposite side of said diaphragm from said valvestem. said operating. stem carried by said crosshead, means iastenedinto said crosshead and extending through said bonnet to travel with andhold said therebe'tween, a stembperating in line with said or in a fixedposition when said operating stem is holding said valve closed on itsseat. means to lock-said crosshead in said fixed position and means tolock said operating stem.

2. In a device of the character described. the combination asin claim 1and means to automatically release said cmsshead locking meanstoopensaidvalve. 1

3. In a valve device or the type in which the valve is inclosed inthevalve by a sealing diaphragm, comprising a" having a valve chamberwith inlet and discharge ands valve seat. a valve to mopeiflite withsaid valve seat, a stemior said v'alve, a 'valve spring to raise saidvalve iro'm its seat, a bonnet having a chamber. a diaphragm clamped atits rim between said bcdy'and bonnet to seal the "Joint valveareciprocating crosshead'in said bonnet and threaded said operating stem,horizontally disposed pins connected to said crosshead through saidbonnet to slide in slots in said bonnet, means to move said crosshead bysaid pins, means to lock said moving means and spring means to releasesaid moving means.

4.Avalvedeviceasinclaim8andasealto hold said spring means in anoperative position. 5. A valve device of the type in which the valve isinclosed in the valve body by a sealing diaphragm with valve operatingmechanism outside of said diaphragm, comprising a valve body having avalve chamber with inlet and discharge passages and a valve seat. avalve in said chamber, a stem for said valve, means to guide said valvestem. a valve spring. a bonnet having a chamber, a diaphragm clamped atits rim be-- tween said body and bonnet to seal the joint therebetween.valve operating means. said operating means consisting oi a crosshead toreciprocafe in said bonnet chamber, an operating stem threaded throughsaid crosshead to fiex said diaphragm and slide through the top or saidbonnet, pins iastened into said crosshead and extending through slots insaid bonnet to move said crosshead in line with said valve stem, asleeve having a rotstive moment about said bonnet andoperstivelyconneciedtosaidorossheadpimby compound slots. said compoundslots having a diagonal part and a substantially horizontal part, saidhorizontal slot part serving to lock said crosshead in its lowestposition by means or said pins.

6.Avalvedeviceasinclalm5andacoverto prevent operation of said operatingstem when said valve is open for discharge. 'l'. In a valve device ofthe type in which the valve is inclowd in the valve body by a sealingdiaphragm with valve operating mechanism outside of said diaphragm.comprising a valve body having a valve chamber, a valve having a stem. 8spring for opening said valve. a diaphragm for sealing said valve andstem in said body. a bonnet having a chamber. a diaphragm clampedbetween said body and bonnet, valve operating means, said operatingmeans including a reciprocating crosshead, an operating stem carried bysaid type with valve operating mechanism outside of said diaphragm,comprising a valve body. a valve in said body, a diaphragm to seal saidvalve in said body. a bonnet on said body. valve operatin means outsideat said diaphragm, said valve operating means consisting of a enosshead,an oper- V sting stem threaded through said crossliead i'or flexing saiddiaphragm, pins to move said crosshead iromivithnnt said bonnet. asleeve mounted on saidbonnet for rotative movement, diagonal slots insaid sleeve for operating said crosshead toward and away from said valveby said sleeve rotative movement. said slots having a substantiallyhorizontal part for locking said croashead and operating stem to holdsaid valve on its seat in a closed position and pivoted lever means torotate said sleeve to unlock said crosshead and release said valve.

9. In a valve device of the diaphragm sealing typ said device includinga valve body, a valve in said body, resilient means for opening saidvalve. a diaphragm to seal said valve in said body, a bonnet on saidbody, a crosshead to reciprocate in said bonnet, an operating stemadiustable through said orosshead to claw said valve by flexing saiddiaphragm, pins in said crosshead extending through vertical slots insaid bonnet, a rotative sleeve mounted on said body. diagonal slots insaid sleeve for reciprocating said erosshead. said slots having asubstantially horizontal part for looking said crosshead pins to holdsaid valve in a closed position, a lever pivoted to said bonnet andhaving a slottedend tor rotating said-sleeve to release said crossheadbins from locked position anda spring to return said lever to itsoperative position. V f

10in vaive-device as in claim 9 and spring means connected to saidbonnet to said sleeve and a sealto' hold said spring!!! a compressedsaid spring means" operating said sleeve to release said pins fromlocked position independently of said lever.

GEORGE SCHAAI".

